diff --git a/src/tokenizer_test.c b/src/tokenizer_test.c
index 2e7e8f6..39c53f6 100644
--- a/src/tokenizer_test.c
+++ b/src/tokenizer_test.c
@@ -220,6 +220,17 @@ TEST(names, t) {
     destroy_tokenizer_test(tt);
 }
 
+TEST(assignment, t) {
+    struct tokenizer_test *tt = new_tokenizer_test(t, "a=a");
+    expect_text_token  (tt, 1, 1, APFL_TOK_NAME, "a");
+    expect_simple_token(tt, 1, 2, APFL_TOK_ASSIGN);
+    expect_text_token  (tt, 1, 3, APFL_TOK_NAME, "a");
+
+    expect_eof(tt);
+
+    destroy_tokenizer_test(tt);
+}
+
 TEST(all_tokens, t) {
     struct tokenizer_test *tt = new_tokenizer_test(t,
     //   1234567
@@ -280,5 +291,6 @@ TESTS_BEGIN
     ADDTEST(simple_variable),
     ADDTEST(numbers),
     ADDTEST(names),
+    ADDTEST(assignment),
     ADDTEST(all_tokens),
 TESTS_END